#include <REGX52.H>

unsigned char NixieTable[] = {0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};

void NixieT(unsigned char Location, unsigned char number);
void Delay(unsigned int time)	;

void main(){
	
	while (1) {
		
		NixieT(1,1);
		NixieT(2,2);
		NixieT(3,3);
		
	}
	
}

void Delay(unsigned int time)		//@12.000MHz
{
	unsigned char i, j;

	while (time--) {
		i = 2;
		j = 239;
		do
		{
			while (--j);
		} while (--i);
	}
}

void NixieT(unsigned char Location, unsigned char number) {
	
	switch(Location) {
		case 1:
			P2_4=1;
			P2_3=1;
			P2_2=1;
			break;
		case 2:
			P2_4=1;
			P2_3=1;
			P2_2=0;
			break;
		case 3:
			P2_4=1;
			P2_3=0;
			P2_2=1;
			break;
		case 4:
			P2_4=1;
			P2_3=0;
			P2_2=0;
			break;
		case 5:
			P2_4=0;
			P2_3=1;
			P2_2=1;
			break;
		case 6:
			P2_4=0;
			P2_3=1;
			P2_2=0;
			break;
		case 7:
			P2_4=0;
			P2_3=0;
			P2_2=1;
			break;
		case 8:
			P2_4=0;
			P2_3=0;
			P2_2=0;
			break;
	}
	
	P0=NixieTable[number];
	Delay(1);
	P0=0x00;
	
}

